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treeofsong started grow question 5 years ago
hey guys, a few days ago i realized that some veins are yellowing, i think its because i didn't use florakleen when the plants started flowering, and all they have a Mg under, if someone has any suggestion i will appreciate
Afghan Kush Ryder AUTO - FIRST RUN
10 weeks
Afghan Kush Ryder AUTO - FIRST RUN treeofsong
Afghan Kush Ryder
9 comments · 5 years ago
Week 6
Leaves. Veins - yellow between
OutForReal answered grow question 5 years ago
Hi there ! Florakleen is just a flushing solution so I don't think that not using it while switching to flowering is no big deal ! But your ph is not at the food range , 5.7 is good for seedling and clone to help the roots systems, but once it's ok you needs to stay around 5.8ph in a coco grow. As you'r using Calimag I don't think that you have a Mag def but if you think so then increase you Calimag concentration ! Hope it will help you
mad_scientist answered grow question 5 years ago
Hello @treeofsong ! I see your nutrients dosage and i have some concerns.. Your final solution ppm are 690 and and i see that you are using flora micro hard water. This means that your water ppm are around 200-250 before adding nutrients and then on top of that you add calimagic which contains 5% calcium and 1.5% magnesium. So if you have hard water why add calimagic. The result is that half of your solution ppm is from calcium. Calcium ppm should not exceed 200 ppm unless the plant shows it needs it. That leads me to the conclusion that this is the reason for your PH going up! I can't see vary well from the photos but i think i am noticing some nitrogen fading starting up. 3 reasons for that. First your nitrogen ppm contribution to the solution is very low because all the ppm place has taken from calcium. Second too much calcium raises your ph to the point that nitrogen locks out. Third maybe you need to use the flora grow. Maybe the 1.5 ml/L of flora grow shouldn't be replaced with 1.5 ml/L of flora bloom (maybe it needs the extra nitrogen that comes from the grow). So my recommendation is to flush with water at 700 ppm of which only 200 comes from cal-mag (that means if you starting water is 200 ppm do not add cal-mag) and ph 5.7 until the ppm from the run off is the same with the ppm that goes in. Happy growing ! :facepunch:
Stick answered grow question 5 years ago
Hi @treeofsong! My guess is that your plants were slightly over-watered during the last weeks, I noticed that the leaves are droopy, even in the grow room they're not "praying the light", and look a bit curled. This situation often lead to nutrients issue, since the roots are drowned/muffled, they can't handle nutrients intakes anymore. Roots need to be on a wet/dry cycle to properly spread and "digest" nutrients from your waterings, although in coco you don't want a 100% dry medium, you still need to apply this wet&dry rotation. Hope this will help, keep us up-to-date and happy growing :facepunch:
Removed answered grow question 5 years ago
MG deficiency would show interveinal yellowing, not yellow veins. That's more like sulfur deficiency, which usually means some lockout, probably due excess P or K, I would do a flush then feed a lighter dose and check how it goes.